Causa Causata

The cause which owes its existence to the “causa causans”; the
secondary cause. The vera causa is (a) the immediate
predecessor of an effect; (b) a cause verifiable by independent
evidence. (Mill.)

In theology God is the causa causans, and creation the
causa causata. The presence of the sun above the horizon is the
vera causa of daylight, and his withdrawal below the horizon is the
vera causa of night.